Both are states in which e- can exist

Ground State: Lowest energy e- configuration◦ Shown on Periodic Table◦ Innermost energy level fills first, then work

outward

Excited State: e- can move to a higher energy level without filling the lower energy level first◦ Do this by absorbing energy

Excited e- fall back to ground state by releasing energy

Energy released called quanta

The SVP Universal CosmologyA Rosetta Stone for the New Science Paradigm

Elements give off different colors depending on the amount of energy released

(how far the e- falls)

Fluorine Ground state e- config (Periodic Table)

◦ 2-7 Possible excited state e- configs

◦ 1-7-1◦ 2-6-1◦ 1-8

Note how an inner level is left partially filled because an e- has jumped to a higher energy level

Note that TOTAL # OF e- REMAINS THE SAME!

1. Which is the electron configuration of an atom in the excited state?

A) 2 – 8 – 2 C) 2 – 7 - 1 B) 2 – 8 – 1 D) 2 – 8 – 3

2. Which electron configuration represents

an atom in the excited state?A) 1 – 2 C) 2 - 3B) 2 – 1 D) 2 - 7

c

c

Formed from e- falling from excited state to ground state

Each element has its own bright-line spectrum

Therefore, this is one way to identify specific elements

So, if you have unknown samples & you want to know if one of them is lithium, compare the unknown elements’

spectra with the known spectrum for lithium.

Another way to ID elements Element heated e- move to excited state (due to absorbing

energy) e- fall back to ground state (due to releasing

energy) Flame turns color specific to that element

1/03 During a flame test, ions of a specific metal are heated in the flame of a gas burner. A characteristic color of light is emitted by these ions in the flame when the electrons

(1) gain energy as they return to lower energy levels(2) emit energy as they return to lower energy levels (3) gain energy as they move to higher energy levels(4) emit energy as they move to higher energy levels

Which electron configuration represents the excited state of a calcium atom?

What is the element Z?

Photon

As energy of a photon increases, the frequency increases and the wavelength decreases

Einstein theorized that a beam of light (wave) can be thought of stream of tiny particles, or bundles of energy, called photons….

A photon is a particle of electromagnetic radiation with no mass that carries a quantum of energy

Electromagnetic Spectrum